Non-heat-conducting receptacle.



E. G. CORWIN. NON-HEAT OONDUGTDIG EBOBP'PACLB.

APPLIUATION FILED JUNE 20, 19121 Patented Dec. 15, 1914.

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WITNESSES ATTORNEY.

ELMER G. CORW'IN. F SEATTLE, WASHINGTON.

NON-'HEAT-CONDUCTING RECEPTACLE.

Specification of Letters Patent.

Patented Dec. 15, 1914.

Application filed June 20, 1912. Serial No. 704,916.

To all u'/1 om it may com-cm Be it known that 1, Fmnnn G. toiiwix, a citizen of the United States, residing at Seattle, in the county of King and State of \Vashington, have'invented a certain new and useful Improvement in Non-Heat-Conducting Receptacles, of which the following is a specification.

My invention relates to improvements in boxes that have double walls between which walls may be confined a non-heat-conducting material as, for instance, sawdust, crushed charcoal. granulated cork, shredded paper or the like, which boxes are adapted to retard the radiation or conduction of heat to o r from anything that may be stored with in them; and the object of my improvements is to provide such boxes so constructed that their inner walls shall be stable and rigid to withstand abnormal strains tending to collapse them while their outer walls shall have adequate tensile strength to resist abnormal strains which tend to bulge or burst them: and a further object of my improve ment is to provide means'whereby the corners of such boxes shall retain their form and means whereby the non-h ut-conducting material that may be disposed betweentheir inner and outer walls shall be retained in a state of equal distribution whereby such inatcrial may not gradually settle and more densely llilt'li the eby to create an empty space between such walls: and a still tun ther object of my im vmveinent is to provide a plan of construction whereby such bovcs mav be made of picccs of sheet material ol' such form that little. if any. of such sheet material shall be wasted and, moreover. by rcuson of such p an ot construction a cheaper quality of such sheet material may be employed without detracting from the merits of the boxes made thereof. 1 attain these objects bv devices illustrated in the acconu)anying drawings. wherein Figure l is a perspective view in elc\a t on of a box embodving my invention without its means for clos ng its open top. Fig. 3 is a view of the same structure in vertical-- s'w-tion on broken line .I of Fig. 1. but in which is shown one form of means for closing the top of such structure. Figs. t and 5 each illustrates by perspective view one form of a detail that may be embodied in my invention. Fig. (3 shows by a view in vertical-section a modified structure embodying my invention as it appears at one .stage in the process of its manufacture at which stage the structure is inv ertcd, Fig. 7 is a view in cross-section of the same on broken line I/ of Fig. (3. Fig. 8 is a view in verti al-section of one form of a detail of my in cntion. Fig. 9 is a view in perspective of the same, Fig. 10 is a fragmentary view in vertical-section showing a modified plan of construction 01 the lower portion of a structure containing my invention, Fig. 11 is a view in perspective of one form of a detail of my invention, Fig. 1") is a view in vertical-section of a modified Iwrnrof a detail of my invention. Fig. 13 is a flagmentary plan view of one of the upper corners of a structure embodying my invention wherein a modified manner of f0lding sheet material to form a corner thereof is shown. Fig. 1-1 is a plan view of a torn] of a detail of my invention, Fig. 15 is a verticalsection of one form of a detail of my invention, Fig. 16 is aview in verticalsection of one form of a detail of my invention, Fig. 171's a plan view of the same detail on a reduced scale and Fig. 18 is a view in verticalsection. on broken line 2*2 ot 'Fio'. 13. showing more clearly the-'plan of folding sheet matiu'ial to form a corner of a structure embodying my invention.

liike reference numerals indicate like parts throughout the drawings.

lleretotore boxes have been provided for preventing a rapid change in the temperature of articles disposed within them and such boxcs'ha vc been made with double walls between which no1i-heat-conducting material was disposed but such boxes have been detective with respect to degrees of structural strength, stability. cleanliness and ellicicncy; for instance. in such boxes the inner ails easily collapse'and the outer walls frequently bulge or burst in handling and during transportation or in the operation of filling the space between such walls with a inurheatwonducting material whereby such material may find. passageway to'leak out to soil the contents of the boxes or surrounding objects. and further, the handling of such boxes in transportation often causes the non-heat-conducting material to settle or pacli more densely thereby leaving empty spaces which reduce the stability of their walls and which reduce their heat insulating qualities and further, such boxes easily become deformed whereby air may gain access to their interior thus reducing Figs. Hand 18 show another plan of dis posing such excess sheet material by tucking the material inwardlyto form the folds as shown in Fig. 18 and indicated by dotted lines in Fig. 13; whereby the end surfaces of the structure may be more even.

Fig. '2 illustrates one plan of closing and sealing the top of a structure embodying my invention wherein is'shown a cover or stopper 37 comprising a box-like device whose exterior form is shown in Fig. 3 in an in'-- verted position. within the walls 33 of which box-like device is disposed non-heatconducting material 36 as shown in Fig. 2. On the upper surface of the stopper 3? is Y glued or otherwise fastened apiece of still sheet material to form a lid 38 of an area equal to the area of the top of the structure which it is designed to close or cover. This stopper 37 is adapted to fit closely and engage with the walls 20 of the structure to maki'it air tight. Over the lid 38'is pasted or glued a cap 39 (which may be made of sheet material of a form shown by a view, on a reduced scale, in Fig. 17) whose sides are turned downwardly to be glued or pasted to the sides of the structure as shown in Fig. .2 and around the edges of such cap .39 is pasted or glued a tape 40 to more se curely seal such cap 39 to the structure.

Figs. 8 and 9 show a modified form of stopper adapted to be substituted for the stopper 37 and like the stopper 37 contains granula non-heat-conducting material withinios walls.

Fig. 15 shows on a reduced scale in vertical-section another form of stopper where within its walls is disposed non-heat-conducting devices comprising alternate layers of thick pieces 41 and thin pieces 42 of non heat-conducting sheet material whereby a stopper may he obviously more stable.

Fig. 16 by a view on reduced scale illustrates another modified form of stopper wherein two compartments 43 may be filled with granular non-heat-conducting material such compartments 4-3 being separated by a still partition 44 which serves to brace and make the walls stronger whereby such stopper may be subjected to greater strain without injury.

A gasket 45 of square form and of soft flexible or elastic material is disposed beneath the flanges M) and cap 47 which gasket, 45 may serve to engage with the top tion another form of stopper, constructed of threepiece's of stiff sheet material. as shown,

ad'aptedKto contain granulated non-heatouter walls, L'l and the non-liability oi" the nonhcatconducting material settling or parking more densely thus to create eniiiity spaces \\'llllill the double walls and. moreover. by reason of the shield '22. under conditions of use. none of the nonhear-conductmg material is likely to find access to the contents of the box to soil such contents.

Obviously a-box made according to my invention may be modified with respect to form and dimensions without departing from the spirit of my invention. as for iri stance, a box of cylindrical or oval form or of a form having semi-circular corners, may be made to embody thick still walls 20 inclosed in a shield 22 and tough pliable walls .l: the inner side of walls 21 and the exterior of the shield 22 being smeared with adhesive material by which the non-heatconducting material may be retained in position.

What I claim is: l. A box formed of sheet material com prising an outer casing, an inner casing positioned therein. a shield surrounding the inner casing and adhesively secured thereto at points adjacent to the top of the wall, the walls of the-outer casing being inwardly bent at their tops and adhesively secured between the tops of the inner casing and the shield, and an angular brace within the space between the inner and outer casing adhesively secured to the topoverturned portion of the outer casing walls and the top portion of the inner casing. the Wallsof the casings having an adhesive applied thereto, a dish-shaped bottom positioned binder Tadhesively secured to the outer side of the bottom and overlapped lower portions of the outer casing.

2. A sheet paper box comprising an outer casing, an inner casing positioned therein. a shield surrounding the inner casing and adhesively secured thereto to points adjacent the top thereof, the walls of the outer casing being inwardly bent at their tops and adhesively secured between the tops of the inner casing and the shield, an angular brace within the space between the inner and outer casing and adhesivcly secured at the top portion of the inner casing. a bottom osition within the outer casin beneath the bottom of the inner casing, the bottom poi tions of the side Walls of the outer casing being lapped inwardly and udhesivelv se cured to the lower side of the-bottom, abettombinder adhesiveh secured on the outer side of the bottom and overlapped portions of the outer casing, and a closure member {for the'box.

.3. A box structure comprising an. inner rigid casing adapted to resist collapsing strain, a paper shield disposed over the external'surfaces oft-lisides and bottom of said rig id inner casing, and a larger outer pliable casing of tough sheet material adapted to resist outward disrupting strain, the top corner portions of said outer casing luring intururd and underlappecl and adhesiwly secured to the outer sidesof the top portion of said casing.

In witness whereof, I hereunto subscribe my name this 11m (lay of June A. 1)., 1912.

EllH-IH (L CORW'IN.

Witnesses: v

'F. ,M. iuus'rmx .ANXA llisiuxs. 

